// Problem: 
// Contest: 
// URL: 
// Memory Limit: 
// Time Limit: 
// #pragma GCC optimize("Ofast")
// #pragma GCC optimize("unroll-loops")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
#include<bits/stdc++.h>
using namespace std;
#define int long long
inline int read(){
	int s=0,w=1;
	char ch=getchar();
	while(ch<'0'||ch>'9'){if(ch=='-')w=-1;ch=getchar();}
	while(ch>='0'&&ch<='9') s=s*10+ch-'0',ch=getchar();
	return s*w;
}
int n;
vector<int> v[101],w;
signed main()
{
	cin>>n;
	w=vector<int> (n+1);
	for(int i=1;i<=n;i++)
	{
		int x;
		while(cin>>x)
		{
			if(!x)break;
			else v[i].push_back(x);
			w[x]++;
		}
	}
	queue<int> q;
	for(int i=1;i<=n;i++)
	{
		if(!w[i])q.push(i);
	}
	while(!q.empty())
	{
		int y=q.front();
		cout<<y<<" ";
		q.pop();
		for(int i=0;i<v[y].size();i++)
		{
			if(--w[v[y][i]]==0)q.push(v[y][i]);
		}
	}
	return 0;
}
